Overview

The LC876694B/LC876678B/LC876662B are 8 bit single chip microcontrollers with the following on-chip functional blocks :

   - CPU: operable at a minimum bus cycle time of 100ns

   - On-chip ROM Maximum Capacity : LC876694B 96K bytes

                                                   LC876678B 80K bytes

                                                   LC876662B 64K bytes

   - On-chip RAM: 2048 bytes

   - VFD automatic display controller / driver

   - 16 bit timer / counter (can be divided into two 8 bit timers)

   - 16 bit timer / PWM (can be divided into two 8 bit timers)

   - timer for use as date / time clock

   - High speed clock counter

   - System clock divider function

   - synchronous serial I/O port (with automatic block transmit / receive function)

   - asynchronous / synchronous serial I/O port

   - 12-channel × 8-bit AD converter

   - Weak signal detector

   - 15-source 10-vectored interrupt system

All of the above functions are fabricated on a single chip.

Features

(1) Read-Only Memory (ROM): LC876694B 98304 × 8 bits

                                        LC876678B 81920 × 8 bits

                                        LC876662B 65536 × 8 bits

(2) Random Access Memory (RAM): LC876694B/78B/62B 2048 × 9 bits

(3) Minimum Bus Cycle Time: 100ns (10MHz) Note: The bus cycle time indicates ROM read time.

(4) Minimum Instruction Cycle Time: 300ns (10MHz)